The Cross-sectional Shape And Wire Diameter Specification Of Copper Wire

The cross-sectional shape directly affects the application scenario: Round copper wire (the most basic form) is widely used in general-purpose cables; Flat copper wire (with a nearly rounded rectangular cross-section) is suitable for high-frequency current transmission (such as transformer windings) due to its low skin effect. Profiles (such as T-shaped and U-shaped) meet special assembly requirements by customizing their cross-sections.
In terms of wire diameter, from ultra-fine wires (< 0.04mm, used for internal chip connections) to extra-large wires (> 100mm, used for busbars), it covers the full-scale requirements from microscopic electronics to macroscopic power transmission.